How do you deal with this?

My boyfriend and I (22) have been dating since we were 17 and we lost our virginity to each other, he technically has never had a sexual experience or have done stuff with any other women.. I’m worried he’s going to regret on missing out on the young “fun” experience.. we do want to get married (he has proposed, not with a ring but with words because we can’t afford that) and have kids that stuff, but he’s content right now with being with me.

Before he has said he feels like he got into a serious relationship to soon, but took it back because i did get upset but he said he didn’t mean it. (This was a year ago)

I worry that if I let him do something about it he might not wanna let it go, or if we continue our serious relationship will he feel less connected to me and feel he’s missed out and I don’t want him cheating on me.

I don’t wanna let him go, I worry he won’t come back to me because what if he falls for another girl or likes her better, or she’s sexier?

What’s the right thing to do?

What do you do in this situation

**(We are in long distance at the moment because he’s in college but I wanna move to him next year) **